Acquisitions and Divestitures - Allocation of Acquisition Costs to Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Jun. 14, 2021	Mar. 10, 2021	Feb. 28, 2020
Business Acquisition [Line Items]
Goodwill	$ 2,210,570	$ 1,895,574
ABEL
Business Acquisition [Line Items]
Current assets, net of cash acquired				$ 18,419
Property, plant and equipment				4,034
Goodwill				59,481
Intangible assets				46,000
Other noncurrent assets				123
Total assets acquired				128,057
Current liabilities				(7,100)
Deferred income taxes				(14,537)
Other noncurrent liabilities				(84)
Net assets acquired				$ 106,336
Adjustment to purchase price	$ 100
Airtech
Business Acquisition [Line Items]
Current assets, net of cash acquired			$ 54,916
Property, plant and equipment			4,868
Goodwill			271,301
Intangible assets			194,300
Other noncurrent assets			87
Total assets acquired			525,472
Current liabilities			(8,315)
Deferred income taxes			(47,886)
Other noncurrent liabilities			(1)
Net assets acquired			$ 469,270
Flow MD
Business Acquisition [Line Items]
Current assets, net of cash acquired					$ 32,858
Property, plant and equipment					4,166
Goodwill					60,026
Intangible assets					53,000
Other noncurrent assets					1,344
Total assets acquired					151,394
Current liabilities					(32,291)
Deferred income taxes					2,459
Other noncurrent liabilities					(329)
Net assets acquired					$ 121,233
Adjustment to purchase price		$ 400